[jira] [Updated] (FLINK-2936) ClassCastException when using EventTimeSourceFunction in non-EventTime program

["Fabian Hueske (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-2936?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Fabian Hueske updated FLINK-2936:
---------------------------------
    Fix Version/s:     (was: 0.10.0)
                   1.0.0

> ClassCastException when using EventTimeSourceFunction in non-EventTime program
> ------------------------------------------------------------------------------
>
>                 Key: FLINK-2936
>                 URL: https://issues.apache.org/jira/browse/FLINK-2936
>             Project: Flink
>          Issue Type: Improvement
>          Components: Streaming
>    Affects Versions: 0.10.0
>            Reporter: Fabian Hueske
>             Fix For: 1.0.0
>
>
> Using an {{EventTimeSourceFunction}} in a DataStream programs that does not operate with {{TimeCharacteristic.EventTime}} leads to a {{ClassCastException}} when the first {{Watermark}} is emitted:
> {code}
> Caused by: java.lang.ClassCastException: org.apache.flink.streaming.api.watermark.Watermark cannot be cast to org.apache.flink.streaming.runtime.streamrecord.StreamRecord
> {code}
> This exception is not very helpful for users that simply for got to set the correct {{TimeCharacteristic}} and should be improved.



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